CN1182479A - Pressure transmitter with high pressure isolator assembly - Google Patents
Pressure transmitter with high pressure isolator assembly Download PDFInfo
- Publication number
- CN1182479A CN1182479A CN96193401A CN96193401A CN1182479A CN 1182479 A CN1182479 A CN 1182479A CN 96193401 A CN96193401 A CN 96193401A CN 96193401 A CN96193401 A CN 96193401A CN 1182479 A CN1182479 A CN 1182479A
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- Prior art keywords
- pressure
- hole
- plug
- sensor
- processing line
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/148—Details about the circuit board integration, e.g. integrated with the diaphragm surface or encapsulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0061—Electrical connection means
- G01L19/0084—Electrical connection means to the outside of the housing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0627—Protection against aggressive medium in general
- G01L19/0636—Protection against aggressive medium in general using particle filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0627—Protection against aggressive medium in general
- G01L19/0645—Protection against aggressive medium in general using isolation membranes, specially adapted for protection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0663—Flame protection; Flame barriers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/142—Multiple part housings
- G01L19/143—Two part housings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/147—Details about the mounting of the sensor to support or covering means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A pressure transmitter (10) includes an isolator mounting assembly (12, 150) for isolating process fluid from an interior cavity (22) of the pressure transmitter (10). The isolator mounting assembly (12, 150) includes an isolator plug (66, 152) for receiving the process fluid line pressure and coupling the line pressure to a sensor cavity (32) formed by a header (68, 154) joined to a distal end of the plug (66, 152). A ring member (70) is attached to the header (68, 154) and the distal end of the plug (66, 152) to reinforce the joint formed between the isolator plug (66, 152) and the header (68, 154). In another embodiment, the isolator mounting assembly (150) includes a base (154) and a support (181) having first and second opposed ends (190, 202). The first end (190) is rigidly bonded to the pressure sensor (184) while an epoxy joint (200) joins the second end (202) of the support (181) to the base (154).
Description
Background of the present invention
The present invention relates to pressure unit, especially the present invention relates to a kind of isolated body assembly parts that are used for the abutment pressure sensor and are used for the inner chamber of pressure transducer and transmitter and processing line fluid partitioning to be measured are opened.
With the isolated body assembly parts fluid partitioning to be measured on pressure transducer and the processing line being left is public known thing.Generally be, the assembly parts of isolation are installed on the base of transmitter, and this transmitter is placed in the hole that the transmitter inner chamber opens wide.Inner chamber is being protected the known circuit that is connected with pressure transducer, so that the proportional signal of pressure on acquisition and the processing line.The isolated body assembly parts comprise a connector or joint, the process fluid that it can be connected and be surveyed to obtain with processing line.Connector has screw thread, and this screw thread engages with the respective threaded of transmitter housing connector and housing are fixed.At a far-end of processing line, this connector receives a machine work plug, and this plug has the flexible isolating diaphragm towards process fluid.This isolation diaphragm separates the inner chamber and the process fluid that form in the plug.This inner chamber is filled with in fact incompressible liquid; For example silicone oil is called " fill liquid " at this and forms from inner chamber to the passage that extends away from the plug end of isolation diaphragm in plug inside.A measuring head welds mutually with the far-end of socket and connector.This measuring head has the formation band to patch the groove of the sensor cavity of end.Measuring head is supporting the pressure transducer in the sensor cavity.Also fill with fill liquid in the sensor cavity.Because the sensor cavity can pass through passage intercommunication fluid with the isolation inner chamber, therefore the pressure of process fluid can be passed to pressure transducer by fill liquid.Pressure transducer provides and fill liquid pressure, thereby also is an output signal that is directly proportional with process fluid pressure.
If pressure transducer measure gage pressure differential pressure, assembly parts then measuring head upper support pressure transducer and have one with the passage of one of them pressure transducer intercommunication fluid.If the thermal expansivity of the thermal expansivity of support member and pressure transducer has apparent difference, variation of temperature makes to produce stress and distortion on the pressure transducer and make assembly parts produce stress and causes damage and measuring error.Because this error is to produce because of the thermal stress that produces on the pressure transducer causes the deformation of measuring sensor, so be difficult to make it and the variation zone that process fluid pressure is produced to separate.A solution in known technology is the propping material of selecting thermal expansivity and pressure transducer to be complementary.Yet prior art exists sealing always and support is fixed on problem on the measuring head.
In addition, although isolation mounts part described above is applicable to multiple applicable cases,, it is not suitable for process fluid pressure usually and surpasses 4000 pounds high-voltage applications per square inch.
Brief summary of the invention
A kind of pressure unit comprises the separated isolated body assembly parts of the inner chamber process fluid and pressure unit, the isolated body assembly parts comprise the line pressure that is used for the receiving process fluid and the cavity of line pressure and sensor are coupled that the sensor cavity is by constituting with the terminal measuring head that links to each other of a plug.One annular element installation testing head and plug end are strengthened the connection that forms between isolated body plug and measuring head.
Another main aspect of the present invention is, when the assembly parts that pressure transducer provided comprise a base and have the relative terminal support with second of first end.First terminal firmly is combined into one with pressure transducer, has an elastomeric joint that second end of bearing is connected on the base simultaneously, and the material of elastomeric joint comprises a kind of in epoxy resin, polyimide or polyurethane (second) fat at least.
Brief description of drawings
Fig. 1 is the view of pressure unit, and it illustrates isolated body assembly parts of the present invention with the form of cut-away section and part square frame.
Fig. 2 is for being installed in the housing contact maker isolated body assembling cross section view manufactured according to the present invention;
Fig. 3 is the part amplification profile view of Fig. 2;
Fig. 4 is the cross section view of the isolated body assembly parts of modification manufactured according to the present invention.
Fig. 5 is the part amplification profile view of Fig. 4.
The detailed description of most preferred embodiment
The transmitter 10 that the present invention has isolated body assembly parts 12 as shown in Figure 1.The housing contact maker 17 that transmitter 10 comprises housing 14 with a base 16, is connected with base 16 by screw thread 19, and a body 18 that amplifies.Housing contact maker 17 comprises a hole 20 that receives isolated body assembly parts 12 of the present invention.Under the situation of other parts that are provided with following described isolated body assembly parts 12 and transmitter 10, the inner chamber 22 in the body 18 that is formed at amplification is led in hole 20.
The process fluid that isolation mounts part 12 will be herein represented with arrow 24 and the import of inner chamber 22 separate.Generally, process pipe (not shown) is transported contacting of process fluid 24 and submissive isolated body diaphragm 26.24 pairs of isolated body partitions 26 of process fluid are exerted pressure.In passage 28, load some filling liquids process fluid pressure is passed to the pressure transducer 32 that is arranged in the sensor cavity 32, also be filled with filling liquid in the sensor cavity 32.
Lead 36 links to each other pressure transducer 30 with primary circuit 38, by line 40 it is linked to each other with transmitter circuit 42 again.As in the prior art,, to transmitter circuit 42 power supplies, turn round hinge line 46 and enter transmitter 10 by port 48 by an external direct current power supply 44 by a pair of hinge line 46 of turning round.This is connected on the line end of turning round hinge line 46 and draws on the fishplate bar 50.By line 52, make and draw fishplate bar 50 and link to each other with transmitter circuit 42. Cover cap 54A and 54B make and draw fishplate bar 50 and transmitter circuit 42 can pass in and out respectively.
For embodiment in, pressure transducer 30 is for known semi-conductor type with strainometer, (do not give among the figure and illustrating), it responds to the pressure in the sensor cavity 32.In order to realize purpose of the present invention, the present invention can adopt other the known pressure transducer with the coupling of isolated body diaphragm 26 fluids, for example uses electric capacity and pressure transducer optics.
Fig. 2 illustrates isolated body assembly parts 12 and housing contact maker 17, and they are that the parts of housing 14 are considered and in order to realize purpose of the present invention.Yet, should recognize, in the present embodiment, although housing contact maker 17 needn't be exactly a removable component of housing 14.In other words, as long as isolated body assembly parts 12 are held in base 16 designs, isolated body assembly parts 12 just can directly be fastened on the base 16.
With reference to next accompanying drawing 3, circular weld 82 connects the apparent surface 90 and 92 of connector 64 and isolated body plug 66 respectively.Preferably as shown in the figure, apparent surface 90 and 92 is the annular surfaces that formed by the groove of placing respectively in connector 64 and the isolated body plug 66 94 and 96.Groove 94 and 96 is arranged to make the interior ring edge substantial registration on surface 90 and 92.Interior ring edge by alignment surface 90 and 92 reduces the stress intensity between apparent surface 90 and 92, thereby has reinforced the composition surface that is formed by circular weld 82.
Article one, circular weld 100 is received measuring head 68 on the end 102 of isolated body plug 66 to form sensor cavity 32.Best, end face 102 comprises an extended loop part 104, and measuring head 68 also has an extended loop part 105 simultaneously, and extended loop part 104 forms an annular surface 106, and it is in the face of an outer shroud cleaved surface 108 that is recessed on the extended loop part 105.For measuring head 68 is aimed at the end face 102 of isolated body plug 66, extended loop part 104 and 105 is through Precision Machining, to form the sidewall that overlaps separately as shown in the figure.
In known manner, for example the compound of used silicone RTV and so in the absolute pressure transducer is fixed to pressure transducer 30 on the measuring head 68.Show in the feed-through hole at 120 places, it is received to the lead 122 that pressure transducer 30 and primary circuit plate 38 are electrically connected.Glass-dead seal 124 makes metallic test head 68 and lead 122 electrical isolations and fixing.Welding one oil filler pipe 126 on measuring head 68, it provides the inlet of filling liquid in sensor cavity 32 for sensor cavity 32.After filling with liquid, oil filler pipe 126 sealings are lived.In sensor cavity 32, establish a liner 128,, thereby reduced the amount of liquid of filling in order to the volume of minimizing sensor cavity 32.
Circular weld 134 and 136 is connected to test headring 70 on measuring head 68 and the isolated body plug 66.Test headring 70 and circular weld 100,134 and 136 all comprise an isolated body plug/measuring head composition surface 101.Test headring 70 and circular weld 134 and 136 are strengthened circular weld 100, thereby measuring head 68 further is fixed on the isolated body plug 66.If desired, an available O grommet type seal 140 engages with the inside surface of housing contact maker 17 further inner chamber 22 isolated and to seal with test headring 70.Turn back to consult Fig. 1, configuration one encapsulating material 144 is in order to fix primary circuit plate 38 wherein and further inner chamber 22 to be sealed in the cavity 146 of housing contact maker 17.
As mentioned above, isolated body assembly parts 12 are separated inner chamber 22 and process fluid 24.Isolated body assembly parts 12 are particularly suitable for high-voltage applications, this is because the composition surface 101 of the composition surface 67 of connector/isolated body plug and isolated body plug/measuring head obtains reinforcing, and the most probable approach that makes process fluid 24 enter inner chamber 22 is at first to begin and through 32 expansions of sensor inner chamber from isolation diaphragm., if process fluid 24 enters sensor inner chamber 32, sensor 30 will be damaged.Transmitter circuit 42 is measured the damage and the output alarm indication of sensor 30, before process fluid 24 windows erosion measuring head 68 enters inner chamber 22, with the problem notifying operation person of transmitter 10.
Fig. 4 illustrates the isolated body assembly parts 150 of control exhaust system 151, and this control exhaust system is applicable to the transmitter of gauge pressure.This control exhaust system 151 directly engages atmosphere with pressure transducer 30.Isolated body assembly parts 12 are such as the aforementioned, and isolated body assembly parts 150 are fixed on the housing contact maker 17 and include connector 64, one isolated body plugs 152, a measuring head 154 and headring 70.Best, be connected connector 64, isolated body plug 152, measuring head 154 and headring 70 by previously described mode with 136 by weld seam 82,100,134.Known as prior art, the gauge pressure transmitter is based on the gaging pressure of process fluid 24 relative atmospheric pressures.Show that in the present embodiment atmospheric pressure offers pressure transducer 30 by the passages 160 in the isolated body plug 152, passage 160 is connected with passage 162 in the test head 154.Best, passage 160 and 162 has suitable diameter and enough length so that the passage of blocking-up flame to be provided.
Show in the present embodiment, by being arranged on the isolated body plug 152 and the opening 166 that communicates with hole 20, atmospheric pressure admission passage 160.If desired, configurable one suitable filtering material 165 on hole 166, for example: porous metals and teflon, to prevent pollutant admission passage 160.On the end face 170 away from the isolated body plug 152 of opening 166, passage 160 leads to chamber 172.Best, chamber 172 is made of an annular internal channel that is arranged in the measuring head 70.Except the opening that is provided by passage 160 and 162, chamber 172 is by weld seam 100,134 and 136 sealings.Passage 162 leads to chamber 172 at the one end, then leads to a cylindrical groove 180 that is arranged in the measuring head 154 at passage 162 away from an end of chamber 172, forms the part of sensor cavity 32.
To discuss below, if at sensor cavity 32 thereby process fluid 24 also occurs so that when losing efficacy, make process fluid 24 can enter groove 180 in sensor 30 or making-up unit, control exhaust system 151 has just stoped process fluid 24 to enter inner chamber 22.More particularly, passage 162 is guided process fluid into chamber 170 by groove 180, fluid is guided into passage 160 and because weld seam 100,134 and 136 and to the direction diffluence of leaving inner chamber 22 again.When process fluid 24 by opening 166 and when finally spilling by hole 20, just export a visible indication, show this type of fault take place.
Then consult Fig. 5, be arranged on the differential pressure pickup 184 that the support 181 in the groove 180 supports in the sensor cavity 32.Best, differential pressure pickup 184 comprises the silicon chip 186 of being with diaphragm, and it is connected on the silicon supporting seat 188, is installed on the support 181 again.Support 181 is an one-piece construction, is that the pyrex of pyrex type is formed basically, its thermal expansivity basically with the equating of silicon bearing 188.Another alternative example, support 181 comprise a suitable pottery.One positive contact 189 is connected to the end face 190 of glass supporter 181 on the lower surface 192 of silicon supporting seat 188.Positive contact 189 makes atmospheric pressure be passed to the diaphragm of silicon chip 186 by the passage in the measuring head 154 162 for the hole 198 in passage in the glass supporter 181 196 and the supporting seat 188 provides airtight sealing.Positive contact is not rubber-like rigid joint.
Compare with the rigid joint 189 between end surfaces 190 and lower surface 192, epoxy resin 199 provides a submissiveer or flexible composition surface 200, and it links to each other the end surfaces 202 of support 181 and seal atmospheric pressure is directly engaged with pressure transducer 30 with measuring head 154.Best, epoxy resin 199 is that support 181 is connected to exclusive device on the head 154.Epoxy resin 199 absorbs the stress that is produced by different heat expansion coefficient between test 154 and the glass supporter 181.Be different from the prior art for glass supporter 181 is welded on the measuring head, it plates metal level with end face 202, and end face 202 of the present invention is coating and retain glass not preferably, thereby reduced installation step, has reduced manufacturing cost.
Best, epoxy resin be dissolving and arbitrarily attenuate reduce in the sensor cavity 32 of sealing and exit or loss of weight so that the thin layer cementing line to be provided, and consequent measuring error.Dissolving and arbitrarily the epoxy resin of attenuate also reduced the stress that produces the space, this stress can cause the fracture of glass pedestal 181 and make heat conduction decline and cause temperature error.In another preferred embodiment, epoxy resin 199 does not comprise any filling material.The application enhancements of no filling epoxy resin the sealing effectiveness that is constituted by the epoxy resin 199 between the stayed surface of glass pedestal 181 and measuring head 154, this is because such class filler has the thermal expansivity that is different from it and is comprised in epoxy resin wherein.Be suitable for the EP0-TEKH77 type MA sealing epoxy resin of epoxy resin for producing of high-voltage applications by snap ring epoxy resins technical concern company limited in the Beile (Epoxy Technology, Inc. of Billerica, MA hermetic sealing epoxy).
Clearly, although described the resilient engagement face that constitutes by epoxy resin 199, also can adopt the adhesives of other organic sealing that is fit to.For example can implement chamber (Ablestik Laboratories of Rancho Dominguesz from the Ai Bulaisike of the blue tall Dominguez of California, CA) buy suitable mold pressing and connected polyimide, and can buy polyurethane (second) fat from Minnesotan bohr Minnesota Mining and Manufacturing Company (Minnesota Mining and Manufacturing commpany of st.Paul.), also can replace epoxy resin 199 with them.
Although, to resilient engagement face 200 as support 181 is fixed on the measuring head 154, method with the relevant sealing of the passage that provides and use the gauge pressure transmitter 162 is described and illustrates, but, obviously, the gauge pressure transmitter only is a type of pressure difference transmitter, and resilient engagement face 200 also can be used for the pressure difference transmitter of other type.
Although the present invention is described with reference to most preferred embodiment, the change that the technician of the industry will be appreciated that in form and details and made does not break away from the spirit and scope of the present invention.
Claims (16)
1. one kind can be connected with processing line and to the respond transmitter of output of the pressure of processing line, it is characterized in that: described transmitter comprises:
A housing, it forms the wall around a hole, and an inner chamber that is formed in the housing is stretched in this hole;
A sensor that is used for gaging pressure;
A circuit, it and sensor couple and provide output; And
A separator, it is installed in the hole, and fluid in the processing line and inner chamber are separated, and separator comprises:
One isolated body plug, it is arranged in the hole and with housing and is connected, and a diaphragm is arranged in the isolated body plug, carries out pressure through a passage that leads to the plug end and couples;
One measuring head, it is connected with the end of plug to form sensor installation and the reception sensor cavity from channel pressure; And
One annular element, it is connected with measuring head with the isolated body plug.
2. transmitter according to claim 1 is characterized in that: it has first circular weld that measuring head is connected to the end of plug, and second circular weld is connected to annular element on the measuring head and the 3rd circular weld is connected to annular element on the isolated body plug.
3. transmitter according to claim 1 is characterized in that: it has one by the connector of first end to the hole that second end extends, and connector can be connected with processing line and be connected with the isolated body plug at second end at first end.
4. transmitter according to claim 3 is characterized in that: it has a circular weld that second end of connector is connected on the plug.
5. transmitter according to claim 1 is characterized in that: it has a second channel that runs through measuring head, and second channel is couple to second pressure on the sensor.
6. transmitter according to claim 5 is characterized in that: it has one to be formed at the apparent surface of measuring head and the groove between the annular element, and groove leads to second channel and couples second pressure.
7. transmitter according to claim 5 is characterized in that: it has one to be formed on the third channel in the plug and to be communicated with the second channel fluid.
8. transmitter according to claim 7 is characterized in that: along a threaded portion, wall can be threaded with plug, and wherein third channel has an opening away from threaded portion.
9. transmitter according to claim 5, it is characterized in that: it has a pipeline, be connected on the measuring head facing to the opening of second channel first end with pipeline with epoxy resin, pipeline supports the sensor in the sensor cavity and second pressure is couple on the sensor.
One kind can be connected with processing line and to the pressure on the processing line respond output transmitter, it is characterized in that: described transmitter comprises:
A housing, it forms the wall around a hole, and an inner chamber that is formed in the housing is stretched in this hole;
A sensor that is used for gaging pressure;
A circuit, it and sensor couple and provide output; And
A separator, it is installed in the hole, and the fluid and the inner chamber of processing line separated, and separator comprises:
One separator plug has a diaphragm therein, carries out pressure through a passage that leads to the plug end and couples;
One measuring head, it is connected to the plug end to form the pressure of sensor cavity reception from passage, and measuring head has a second channel, extends through measuring head by sensor cavity, and second channel couples second pressure; And
One pipeline, it is with the opening of epoxy tree tree facing to second channel, and first end of pipeline is connected on the measuring head, and pipeline supports the sensor in the sensor cavity and second pressure is couple on the sensor.
11. assembly parts that are used for pressure transducer, it is characterized in that: it comprises:
One pedestal;
One support, it has first and second opposite ends, and wherein first end and pressure transducer are rigidly connected; And
One at second end of support and the resilient engagement face between the pedestal, and resilient engagement bread contains a kind of material of selecting in one group of material being made up of epoxy resin, polyimide and polyurethane.
12. assembly parts according to claim 11 is characterized in that: material wherein is the epoxy resin that can dissolve arbitrarily.
13. assembly parts according to claim 11 is characterized in that: material wherein is the epoxy resin of different fillers.
14. one kind can be connected with processing line and to the pressure on the processing line with respect to atmospheric pressure respond output transmitter, it is characterized in that: described transmitter comprises:
A housing, it forms the inwall around a hole, and an inner chamber that is formed in the housing is stretched in this hole;
A sensor that is used for gaging pressure;
A circuit, it and sensor couple and provide output; And
An isolated body plug that is configured in the hole, it comprises:
A diaphragm therein couples by first passage and plug terminal pressure; Be used for sending atmospheric pressure to sensor to the second channel that second surface extends by first surface; And one be configured in the part that is connected with inwall between first surface and the second surface.
15. one kind can be connected with processing line and to the pressure on the processing line respond output transmitter, it is characterized in that: described transmitter comprises:
A housing, it forms the wall around a hole, and the inner chamber that is formed in the housing is stretched in this hole; And,
Be installed in a barrier assembly in the hole, it separates fluid in the processing line and inner chamber, and barrier assembly comprises:
One is arranged on the stab contact in the hole, and it has one to be configured in the diaphragm that an extension is used to receive pressure, and there is first group of screw thread the extension;
One has by the connector of first end to the hole that second end extends, it can with processing line first end is connected and have with the extension on first group of screw thread, second group of screw thread of arranging in pairs or groups; And
One circular weld is connected to stab contact on the connector.
16. one kind can be connected with processing line and to the pressure in the processing line respond output transmitter, it is characterized in that: described transmitter comprises:
A housing, it forms the wall around a hole, and the inner chamber that is formed in the housing is stretched in this hole; And
A barrier assembly that is installed in the hole, it separates fluid in the processing line and inner chamber, and barrier assembly comprises:
One is placed in the isolated body plug in the hole, and it has a diaphragm that is used to receive pressure, and the isolated body plug has around one first of first groove and connects the surface;
One has the connector that connects the surface around second of second groove, and connector is configured to make first and second grooves to be interconnected, and
One circular weld connects the surface with first and is connected to second and connects on the surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43058395A | 1995-04-28 | 1995-04-28 | |
| US08/430,583 | 1995-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1182479A true CN1182479A (en) | 1998-05-20 |
Family
ID=23708185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96193401A Pending CN1182479A (en) | 1995-04-28 | 1996-04-24 | Pressure transmitter with high pressure isolator assembly |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6050145A (en) |
| EP (1) | EP0824675B1 (en) |
| JP (1) | JP3476199B2 (en) |
| CN (1) | CN1182479A (en) |
| BR (1) | BR9608026A (en) |
| CA (1) | CA2217019A1 (en) |
| DE (1) | DE69629024T2 (en) |
| MX (1) | MX9707606A (en) |
| WO (1) | WO1996034264A1 (en) |
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| CN108955988A (en) * | 2017-02-06 | 2018-12-07 | 罗斯蒙特公司 | Improved pressure transmitter |
| CN111487006A (en) * | 2020-04-16 | 2020-08-04 | 南京高华科技股份有限公司 | Micro differential pressure sensor based on stress isolation structure |
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| DE19711939A1 (en) * | 1997-03-21 | 1998-09-24 | Bosch Gmbh Robert | Device for detecting the pressure and the temperature in the intake manifold of an internal combustion engine |
| US6422085B1 (en) | 1998-07-21 | 2002-07-23 | Endress + Hauser Gmbh + Co. | Flush-diaphragm relative pressure sensor |
| EP0974825B1 (en) * | 1998-07-21 | 2008-09-17 | Endress + Hauser GmbH + Co. KG | Relative pressure sensor |
| US6571132B1 (en) | 1999-09-28 | 2003-05-27 | Rosemount Inc. | Component type adaptation in a transducer assembly |
| US6487912B1 (en) | 1999-09-28 | 2002-12-03 | Rosemount Inc. | Preinstallation of a pressure sensor module |
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| CN108885150A (en) * | 2016-04-26 | 2018-11-23 | 株式会社电装 | Physical quantity sensor and manufacturing method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE69629024D1 (en) | 2003-08-14 |
| MX9707606A (en) | 1997-12-31 |
| DE69629024T2 (en) | 2004-04-22 |
| WO1996034264A1 (en) | 1996-10-31 |
| US6050145A (en) | 2000-04-18 |
| EP0824675A1 (en) | 1998-02-25 |
| CA2217019A1 (en) | 1996-10-31 |
| BR9608026A (en) | 1999-05-04 |
| JP3476199B2 (en) | 2003-12-10 |
| JPH11504710A (en) | 1999-04-27 |
| EP0824675B1 (en) | 2003-07-09 |
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